A Jenga-style cylindrical tower of books that appears to go on forever.

Everything from miniature biblical scenes to life-sized statues are almond-based at this sweet and nutty gallery.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The metal leaves on this tree are engraved with the names of Holocaust victims.

Once the home of a hermetic monk, this cave now houses a small church.

A Hungarian pharmacy museum with a box full of mummy powder.

This 135-year-old weather station studied the effects of the climate on human health.

An abandoned train station in Munich constructed for the 1972 Olympic games.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

This splendid tomb may look fantastic, but there's nothing in it...

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Baroque celebration of the end of the Great Plague of Vienna.

The final resting place for the remains of 143 Habsburg royalty.

The topiary maze at the Habsburg hunting lodge.

A cableway for car transport.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The alley connecting two of country music’s most historic venues has a rich history of its own.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.